River-bed drain
What is this?
River-Bed Drain is the action or effect of drying up or extracting the humidity.
Reasons
The climate
The human action
The ground
The environmental impact
The forest fires
The climate
The Adaja River receives several tributaries, but this doesn’t solve the drought. Although they come from the hills they don't collect water in abundance due to the scanty rains, and this produces a big irregularity.
The human action
During the last years, Avila city council has been carrying out a project about putting human supervision to guarantee the recovery and restoration of the source and riversides of the river, degraded by the humans . But this project will influence the river source because it is going to modify the natural landscape.
The soil
It is firstly, dry and sandy.
The soil is dry so, it isn’t waterproof. When it rains, the water penetrates through the pores of the terrain and the rocks making aquifers, and for this, the source of the river doesn’t increase. River-bed drain fissures are formed because of the quality of the terrain.
The environmental impact
River bed drain causes serious damage to the river ecosystem: loss of the riverside forest, riverbed’s narrowing, mortality of fishes and other species, etc.
River bed drain affects too every spot in the lower part of the river, causing sanitary risks because there isn't enough water for the waste spills, either legal or illegal, to be dissolved.
Laura Martín, Diana Fernández, Paula Rodríguez and José Luis López